12 January 2015, 05:23 PM ET
For the first time in more than three years, a space shuttle main engine has roared to life in support of NASA's next-generation heavy-lift rocket. The SSME, renamed the RS-25, fired Jan. 9 at Stennis Space Center in Mississippi.
12 January 2015, 02:53 PM ET
Engineers with the private spaceflight company SpaceX are still trying to piece together what went wrong with a reusable rocket test Saturday, but the company's founder Elon Musk thinks there's a better chance of succeeding during a future test.
12 January 2015, 01:45 PM ET
The supermassive black hole at the center of the Milky Way galaxy recently spit out the largest X-ray flare ever seen in that region, astronomers reported this week at the 225th meeting of the American Astronomical Society.
12 January 2015, 12:25 PM ET
The Stephen Hawking biopic "The Theory of Everything" took home two Golden Globe awards during the Sunday night (Jan. 11) ceremony.
12 January 2015, 11:40 AM ET
Nostalgic fans of space-themed games should have dozens of options to explore.
12 January 2015, 11:33 AM ET
Congress mandated that NASA’s new Space Launch System must use Space Shuttle Main Engines (RS-25 ), one which fired successfully for 500 seconds at the Stennis Space Center in Mississippi on Jan. 9th, 2015.
12 January 2015, 11:20 AM ET
The CRS-5 cargo mission has arrived at the International Space Station on Jan. 12, 2015. It is carrying two tons of supplies and experiments for the crew.
12 January 2015, 09:28 AM ET
A Chinese spacecraft service module has entered orbit around the moon, months after being used in the country's landmark test flight last November that sent a prototype sample-return capsule on a flight around the moon and returned it to Earth.
12 January 2015, 08:12 AM ET
Opportunity took the photo on Tuesday (Jan. 6) from atop "Cape Tribulation," on the western rim of Endeavour Crater. The summit sits about 440 feet (135 meters) above the surrounding plains, NASA officials said.
12 January 2015, 08:10 AM ET
NASA astronaut Barry "Butch" Wilmore, commander of the station's current Expedition 42, grappled Dragon using the orbiting outpost's huge robotic arm at 6:12 a.m. EST (1112 GMT) on Monday (Jan. 12).
11 January 2015, 10:16 AM ET
This incredible time-lapse of Earth from space was created from about 12,500 images taken by ESA astronaut Alexander Gerst during his six-month stay on the International Space Station.
11 January 2015, 09:00 AM ET
Getting a handle on what rocky worlds in our solar system would look like from afar will give us a basis for comparison as we seek out distant, habitable exoplanets.
11 January 2015, 08:00 AM ET
From alien planets to star clusters, the 225th meeting of the American Astronomical Society featured talks on amazing space science discoveries from Jan. 4 to Jan. 8, 2015.
10 January 2015, 08:30 AM ET
SpaceX's Falcon 9 rocket launched at 4:47 a.m. EST Saturday from Florida's Cape Canaveral Air Force Station. The company also aimed to bring the Falcon 9's first stage down on an "autonomous spaceport drone ship" in the Atlantic Ocean.
10 January 2015, 06:02 AM ET
SpaceX will attempt the first-ever ocean platform landing of reusable rocket stage during the Jan. 6, 2015 launch of its Falcon 9 rocket and Dragon cargo ship. See photos from the mission here.
10 January 2015, 05:04 AM ET
The SpaceX cargo ship launched to the International Space Station on Jan. 10th, 2014. SpaceX will attempt to land the rocket's first stage on a platform in the Atlantic Ocean.
09 January 2015, 04:14 PM ET
The astronauts and cosmonauts aboard the International Space Station now have three new crewmates who look a lot like them — only much, much smaller. LEGO minifigures customized to look like the crew have been revealed aboard the orbiting outpost.
09 January 2015, 02:52 PM ET
SpaceX is set to launch its Dragon spacecraft in the wee hours of Saturday, Jan. 10, and the predawn Falcon 9 rocket liftoff just might be visible to early-bird skywatchers long the U.S. East Coast. Here's how to see it.
09 January 2015, 02:30 PM ET
Amateur astronomers captured amazing photos of a bright comet as it raced across the sky this week. See the amazing photos from Tyler Leavitt in Las Vegas and Chad Bakley in Cape May, New Jersey.
09 January 2015, 11:50 AM ET
Binoculars are great for all kinds of stargazing, for beginners and seasoned veterans alike. Here are some of the best binoculars for astronomy.
09 January 2015, 11:30 AM ET
Billionaire space entrepreneur Elon Musk of SpaceX says he will unveil his plan for a Mars Colonial Transport, spacesuits and more by the end of 2015. Get a glimpse of what Musk envisions for the Red Planet.
09 January 2015, 10:44 AM ET
NASA's CATS instrument — which is set to launch toward the orbiting lab early Saturday aboard SpaceX's robotic Dragon cargo capsule — will track clouds and tiny particles of dust, smoke and pollution in Earth's atmosphere that influence climate.
09 January 2015, 10:30 AM ET
SpaceX's Falcon 9 rocket is scheduled to launch the company's unmanned Dragon capsule from Florida's Cape Canaveral Air Force Station at 4:47 a.m. EST Saturday; forecasters are predicting an 80 percent chance of good weather.
09 January 2015, 10:16 AM ET
Read our telescopes for beginners review to find the best telescope for you.
09 January 2015, 07:00 AM ET
Intriguing features photographed by NASA's Mars rover Curiosity probably don't have a biological origin, mission team members say.
08 January 2015, 03:43 PM ET
The hard-to-spot planet Mercury can be found near Venus just after sunset this week, offering a great chance to see the closest planet to sun. Here's how to see Mercury and Venus together in January's night sky.
08 January 2015, 02:01 PM ET
The Hubble Space Telescope has captured an amazing new viewof the Andromeda Galaxy. The new mosaic image represents the sharpest and largest mosaic image of the Milky Way's galactic neighbor ever taken, Hubble officials said.
08 January 2015, 01:50 PM ET
Travel to distant alien worlds with two suns, red grass and strong gravity in three retro exoplanet posters produced by an artist working with NASA.
08 January 2015, 01:42 PM ET
Stephen Hawking celebrates his 73rd birthday today.
08 January 2015, 01:37 PM ET
The nearby protoplanetary system HD142527 shows shadows from inclined material which may be shepherded by a planet in a highly angled orbit.
08 January 2015, 11:00 AM ET
After pointing the Allen Telescope Array at a newly-found exoplanet discovered by NASA's Kepler space telescope, SETI reports there is no transmitting alien civilization. But the search continues.